"The principal theme for establishment of the Osaka Aquarium KAIYUKAN was based on the Gaia hypothesis proposed by Dr. James Lovelock. The Gaia hypothesis is an ecological theory that the Earth with its many active volcanoes and all of its living creatures closely interact with each other to form, and function as, a single organism. Moreover, considering that there is considerable geographical overlap in the Pacific Ocean region between the Pacific Rim volcanic belt with frequent volcanic eruptions and an area characterized by rich biodiversity, the KAIYUKAN embodies the concepts of “the Ring of Fire” and “the Ring of Life” into all its exhibits." (Taken from the website)